We now offer testing for the gene linked to blue eggshells in chickens. This identifies whether a bird carries the genetic markers responsible for producing blue or blue-tinted eggs. This DNA-based test detects the presence of the O (oocyan) gene and provides results as homozygous positive, heterozygous, or homozygous negative. These clear genetic outcomes help breeders understand their birds’ inheritance patterns, make informed breeding decisions, and reliably predict future eggshell colour potential.

For more information click here – 2025 Avian DNA Testing Order Form.

Please contact us prior to sending samples from outside of New Zealand.